On Thu, Jul 05, 2007 at 02:49:18PM -0400, Daniel Schepler wrote: > /bin/sh ../../../libtool --tag=CC --mode=compile i486-linux-gnu-gcc > -DHAVE_CONFIG_H -I. -I../../../include -I../../../include > -I../../../native/jni/classpath -I../../../native/jni/native-lib `pkg-config > --cflags-only-I alsa` -W -Wall -Wmissing-declarations -Wwrite-strings > -Wmissing-prototypes -Wno-long-long -Wstrict-prototypes -pedantic -Werror > `pkg-config --cflags-only-other alsa` -g -O2 -c -o > gnu_javax_sound_midi_alsa_AlsaPortDevice.lo > gnu_javax_sound_midi_alsa_AlsaPortDevice.c > i486-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include > -I../../../native/jni/classpath -I../../../native/jni/native-lib > -I/usr/include/alsa -W -Wall -Wmissing-declarations -Wwrite-strings > -Wmissing-prototypes -Wno-long-long -Wstrict-prototypes -pedantic -Werror -g > -O2 -c gnu_javax_sound_midi_alsa_AlsaPortDevice.c -fPIC -DPIC -o > .libs/gnu_javax_sound_midi_alsa_AlsaPortDevice.o > cc1: warnings being treated as errors > gnu_javax_sound_midi_alsa_AlsaPortDevice.c: In function > 'Java_gnu_javax_sound_midi_alsa_AlsaPortDevice_run_1receiver_1thread_1': > gnu_javax_sound_midi_alsa_AlsaPortDevice.c:57: warning: the address of > 'pinfo' will always evaluate as 'true' > gnu_javax_sound_midi_alsa_AlsaPortDevice.c:58: warning: the address of > 'sinfo' will always evaluate as 'true' > gnu_javax_sound_midi_alsa_AlsaPortDevice.c:59: warning: the address of 'subs' > will always evaluate as 'true' > make[4]: *** [gnu_javax_sound_midi_alsa_AlsaPortDevice.lo] Error 1
The problem is that pinfo, sinfo and subs are all local variables. The codes uses the & operator on them which is always a valid value and never NULL. &foo is used as argument to a macro which does assert(&foo); The compiler recognices that this is always true. This macro is in seq.h (from libasound2-dev) guards against NULL pointers given to it which makes sense. To disable that warning its possible to use -Wno-address but this is unknown in earlier versions of GCC. I will add it when GCC 4.2 becomes default in unstable. Cheers, Michael -- .''`. | Michael Koch <[EMAIL PROTECTED]> : :' : | Free Java Developer <http://www.classpath.org> `. `' | `- | 1024D/BAC5 4B28 D436 95E6 F2E0 BD11 5923 A008 2763 483B -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
